MAX136

低功耗、3 1/2位ADC,带有显示/保持和直接LCD驱动器


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说明

The MAX136 is a monolithic analog-to-digital converter (ADC) with very high input impedance. It differs from the Maxim ICL7136 in that the MAX136 provides a Hold pin, which makes it possible to hold or "freeze" a reading. The MAX136 directly drives a nonmultiplexed liquid crystal (LCD) display, requiring no external drive circuitry. With minor external component changes, it is pin compatible with the ICL7116 but with significantly reduced power consumption, making the MAX136 a superior device for portable systems.

Versatility and accuracy are inherent features of this ADC. The dual-slope conversion technique automatically rejects interference signals common in industrial environments. True differential inputs allow direct measurements of bridge transducer outputs or load cells. The zero-integrator phase eliminates overrange hangover and hysteresis effects. The MAX136 offers high accuracy by lowering rollover error to less than one count and zero reading drift to less than 1µV/°C.

MAX136:引脚配置 MAX136:引脚配置 放大+

关键特性

  • Power Dissipation Guaranteed Less than 1mW–9V Battery Life 3000 Hours Typical
  • Hold Pin Allows Indefinite Display Hold
  • Guaranteed First Reading Recovery from Overrange
  • On-Board Display Drive Capability—No External Circuitry Required
  • High-Impedance CMOS Differential Inputs
  • Low Noise (< 15µVP-P) Without Hysteresis or Overrange Hangover
  • Clock and Reference On-Chip
  • Zero Input Gives Zero Reading
  • True Polarity Indication for Precision Null Applications
  • Key Parameters Guaranteed Over Temperature

应用

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Part NumberResolution
(±Counts)
Conv. Rate
(ksps)
Data BusDiff/S.E. InputExternal VREF
(V)
External VREF
(V)
Bipolar VIN
(±V)
Package/PinsBudgetary
Price
maxminmaxmaxSee Notes
MAX136 20000.00257-SegmentDiff. Only099
MQFP/44
PDIP/40
PLCC/44
$5.27 @1k
查看所有Display-Oriented ADCs (27)
Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。

技术资料

设计指南 2102 Delta-Sigma ADCs Replace Integrating ADCs for Panel Meters

质量和环境数据

申请可靠性报告: MAX136 
无铅封装的锡(Sn)晶须报告
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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